11621615051 has 2 divisors, whose sum is σ = 11621615052. Its totient is φ = 11621615050.

The previous prime is 11621615041. The next prime is 11621615077. The reversal of 11621615051 is 15051612611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11621615051 - 2¹⁰ = 11621614027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11621615041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810807525 + 5810807526.

It is an arithmetic number, because the mean of its divisors is an integer number (5810807526).

Almost surely, 2^11621615051 is an apocalyptic number.

11621615051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621615051 is an equidigital number, since it uses as much as digits as its factorization.

11621615051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 29.

The spelling of 11621615051 in words is "eleven billion, six hundred twenty-one million, six hundred fifteen thousand, fifty-one".